Mixture-compressing internal combustion engine with applied ignition

摘要

A mixture-compressing internal combustion engine with applied ignition and valves arranged suspended and inclined towards the cylinder axis comprises a combustion chamber, which is formed by a recess in the cylinder head and by a recess in the piston head, and a quench area formed by a part of the end face of the cylinder head lying perpendicular to the cylinder axis and a corresponding part of the piston head surface also lying perpendicular to the cylinder axis. In order to reduce the fuel consumption and to reduce the exhaust gas constituents CO, HC and NOx, the combustion chamber shape is designed in such a way that the recesses in the piston head in at least one plane have a circular cross-section with a radius from 30 mm to 70 mm, the quench area has a size of 15% to 35% of the piston head surface, and the valves are arranged inclined at an angle of 10 DEG to 30 DEG to the cylinder axis.